/Engine/Source/Runtime/InputCore/Classes/InputCoreTypes.h
The number of entries in ETouchIndex must match the number of touch keys defined inEKeysand NUM_TOUCH_KEYS above.
namespace ETouchIndex { enum Type { Touch1, Touch2, Touch3, Touch4, Touch5, Touch6, Touch7, Touch8, Touch9, Touch10, CursorPointerIndex, MAX_TOUCHES, } }